Well, if even the official Irish statistics office lists the name with a "h" at the end, I would not dare to drop it:
http://www.cso.ie/en/releasesandpublications/er/ibn/irishbabiesnames2015/
(Open the first table "Table 1 Top 100 babies' names registered in 2015, in order of popularity, with corresponding rank between 2010 and 2015")
THe Scottish statistics office does the same: With "h", not without it.
This message was edited 1/18/2017, 8:40 AM